/**
 * asn1enc.js
 */
import { AsnEncryptOptionsWithPassphrase, DER, PEM } from './typedef';
/**
 * Convert jwk to spki/pkcs8 in string or binary format.
 * @param {JsonWebKey} jwkey - A key object in JWK format to be encoded.
 * @param {boolean} outputPublic - Derive public key from private key when true
 * @param {AsnFormat} format - 'pem' or 'der'
 * @param {boolean} compact - 'true' or 'false' for EC public key compressed representation in der/pem
 * @param {String} passphrase - if passphrase is given and the given key is private key, it will be encoded with the passphrase.
 * @param {AsnEncryptOptionsWithPassphrase} encOptions - ASN.1 encryption options
 * @return {Uint8Array|String} - Encoded private key in DER or PEM
 */
export declare const fromJwk: (jwkey: JsonWebKey, format: 'pem' | 'der', { outputPublic, compact, encOptions }: {
    outputPublic?: boolean | undefined;
    compact?: boolean | undefined;
    encOptions?: AsnEncryptOptionsWithPassphrase | undefined;
}) => Promise<PEM | DER>;
/**
 * Convert SPKI/PKCS8 key in string or binary format to JWK.
 * @param {PEM|DER} key - Key object.
 * @param {AsnFormat} format - 'pem' or 'der'
 * @param {boolean} [outputPublic] - Export public key even from private key if true.
 * @param {String} [passphrase] - Encrypt private key if passphrase is given.
 * @return {JsonWebKey} - Obtained key object in JWK format.
 * @throws {Error} Throws if UnsupportedKeyStructure, UnsupportedKey or InvalidKeyType.
 */
export declare const toJwk: (key: PEM | DER, format: 'pem' | 'der', { outputPublic, passphrase }: {
    outputPublic?: boolean | undefined;
    passphrase: string;
}) => Promise<JsonWebKey>;